pretty big battle here. the world's laenget online retailer is fighting efforts to force it to collect sales tax from its customers the way other stores do. >> california claims it's losing more than a billion dollars to uncollected taxes from internet sellers, and we're going to look at this fierce fight, which is happening in several states. find out if it means that you'll soon be paying taxes on your online purchases. >>> first, though, betty ngyuen is at the newsdesk with another look at our top headlines. >> good morning, guys. good moerning to you. america's longest running manned space program ended this morning. >> landing here, down and locked. >> the shuttle "atlantis" touched down early this morning at florida's kennedy space center. it is the final landing for the shuttle program, which began 30 years ago. and after touchdown, the four "atlantis" astronauts walked off the space shuttle for their last time and shook hands with nasa officials. >>> in other news, media baron rupert murdoch is home